From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7AC8C4332F for ; Thu, 8 Dec 2022 14:26:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230167AbiLHO0l (ORCPT ); Thu, 8 Dec 2022 09:26:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229895AbiLHOZr (ORCPT ); Thu, 8 Dec 2022 09:25:47 -0500 Received: from mail-pl1-x62c.google.com (mail-pl1-x62c.google.com [IPv6:2607:f8b0:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C80FA58BF8; Thu, 8 Dec 2022 06:25:14 -0800 (PST) Received: by mail-pl1-x62c.google.com with SMTP id jl24so1633292plb.8; Thu, 08 Dec 2022 06:25:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=wmGAlO5zyAzLmsfcY7QO9uc196l8ZQ3S+6vXq/Ug34c=; b=K43863XHWOnOdREK4qgSuixcuHMF+6d1XlSrRcXHm+c9Y6lIfMrxulmZ4840gJFNLl w6JhkZtLAQhzCvqAXcVVclkf3JY2q2Qpyd+lzd+zneRggndPx5YO76ZqW7G4UCNkvohF qM3qV+3JCVXhDgio0RwbZ88HMQovUtn2rHsmzEQmgbRC6m/QWLS5ZlZHfOvdZSlUdOB3 4Z5eMmS3m8rEqUe7LPBt7X+0+CSKNRjk2HQ+7Ttm9Te1fy2ft/OPnPvpcbTmdxTCkXul xuRYhXD0zFmF7GEBVWXi2hhNNFEx4uu9LBRB6pvSxDdNanmlLSY51cyzyUWpZ8aXz5eB U3uQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=wmGAlO5zyAzLmsfcY7QO9uc196l8ZQ3S+6vXq/Ug34c=; b=O2cC3QIf0IYcjD+NADZPLaCGXAcOp0clIJtEheZ5kkqH4RAnk65MzxrQyVAxAtSRgY lqPLxlYHQh2gDbLJkz5ei1FTK3U6fPevdrTS36UMVkLEu73aOiDu67DPAlg3T2meHFQK MEhIDyOYkQkMVX4x2yRk4rNMDSE6x1c/FV69CvhCbmUhd5hkuokywdwXTUctqzSxNKQN 407JhP5JyHu7tIcYGOlZ+MjjVyihuzoqdEkFZ4aGot01UUyzMsAG52ias2Qm5+COmaFw uCBMjRavhweJgYbxkCS/ElnNpjWX3Q+BbuPbmDYp17bmTMguk6DonxDa4HXMJ4EZvd69 c58w== X-Gm-Message-State: ANoB5pnFnHosDDShRPQechkjay3CPqb7HxOGNs38yXIDrRW6/JsRC/oN /+700LuBtJKOr8B3bCM6Sc8= X-Google-Smtp-Source: AA0mqf5+AFH8z+yVHXhseghDySWBisQPIq86nNDTfcvaUbBTefO9DVTOWDp2XaeGtLyV/YtPMmHhVg== X-Received: by 2002:a17:90a:2dc8:b0:219:baef:3ba with SMTP id q8-20020a17090a2dc800b00219baef03bamr22954074pjm.6.1670509514241; Thu, 08 Dec 2022 06:25:14 -0800 (PST) Received: from ?IPV6:2404:f801:0:5:8000::75b? ([2404:f801:9000:18:efec::75b]) by smtp.gmail.com with ESMTPSA id gt14-20020a17090af2ce00b00219bf165b5fsm2972546pjb.21.2022.12.08.06.25.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 08 Dec 2022 06:25:13 -0800 (PST) Message-ID: Date: Thu, 8 Dec 2022 22:25:05 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: [RFC PATCH V2 16/18] x86/sev: Initialize #HV doorbell and handle interrupt requests Content-Language: en-US To: "Gupta, Pankaj" , luto@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, seanjc@google.com, pbonzini@redhat.com, jgross@suse.com, tiala@microsoft.com, kirill@shutemov.name, jiangshan.ljs@antgroup.com, peterz@infradead.org, ashish.kalra@amd.com, srutherford@google.com, akpm@linux-foundation.org, anshuman.khandual@arm.com, pawan.kumar.gupta@linux.intel.com, adrian.hunter@intel.com, daniel.sneddon@linux.intel.com, alexander.shishkin@linux.intel.com, sandipan.das@amd.com, ray.huang@amd.com, brijesh.singh@amd.com, michael.roth@amd.com, thomas.lendacky@amd.com, venu.busireddy@oracle.com, sterritt@google.com, tony.luck@intel.com, samitolvanen@google.com, fenghua.yu@intel.com Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org References: <20221119034633.1728632-1-ltykernel@gmail.com> <20221119034633.1728632-17-ltykernel@gmail.com> From: Tianyu Lan In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/8/2022 7:47 PM, Gupta, Pankaj wrote: >> diff --git a/arch/x86/include/asm/irqflags.h >> b/arch/x86/include/asm/irqflags.h >> index 7793e52d6237..e0730d8bc0ac 100644 >> --- a/arch/x86/include/asm/irqflags.h >> +++ b/arch/x86/include/asm/irqflags.h >> @@ -14,6 +14,9 @@ >>   /* >>    * Interrupt control: >>    */ >> +#ifdef CONFIG_AMD_MEM_ENCRYPT >> +void check_hv_pending(struct pt_regs *regs); >> +#endif >>   /* Declaration required for gcc < 4.9 to prevent >> -Werror=missing-prototypes */ >>   extern inline unsigned long native_save_fl(void); >> @@ -35,6 +38,19 @@ extern __always_inline unsigned long >> native_save_fl(void) >>       return flags; >>   } >> +extern inline void native_restore_fl(unsigned long flags) > > Don't know if want to re-introduce this again? as it was removed with > ab234a260b1f ("x86/pv: Rework arch_local_irq_restore() to not use popf") Nice catch！ This should be here again. Will remove it in the next version. Thanks.